<template>
  <div class="hm-main">我是主体内容
    <HmButton />
  </div>
</template>

<script>
export default {
  name: 'HmMain'
}
</script>

<style>
.hm-main {
  background-color: green;
  color: white;
  width: 800px;
  height: 400px;
}
</style>